Karen

Karen Smith is a member of the Plastics, a student at North Shore High School. She's shown to be extremely ditzy and completely clueless on many occasions, and she is easily influenced by Regina George and Gretchen Wieners. She is aware of her intellectual deficiency, noting that she's failing all her classes.

Although she is by far the dumbest of the group, Karen is really nice and friendly. Just like her fellow Plastics, Karen also comes from a wealthy family; however, her family isn't as rich as Regina's or Gretchen's.

She is notably the most feminine one in the group, and even Regina admitted that Karen should have been nominated for the Spring Fling Queen crown instead of Gretchen, who Regina claims she doesn't find pretty. However, Regina adds that people never consider her “because she’s such a slut” referring to her promiscuity.